Using Serviceguard Extension for RAC, 6th Edition, April 2008

Mirroring and Resilvering
On node and cluster wide failures, when SLVM mirroring is used and Oracle resilvering
is available, the recommendation for the logical volume mirror recovery policy is set
to full mirror resynchronization (NOMWC) for control and redo files and no mirror
resynchronization (NONE) for the datafiles since Oracle would perform resilvering on
the datafiles based on the redo log.
NOTE: If Oracle resilvering is not available, the mirror recovery policy should be set
to full mirror resynchronization (NOMWC) of all control, redo, and datafiles.
Shared Storage Activation
Depending on your version of Oracle Cluster Software, the default configuration for
activation of the shared storage for Oracle Cluster Software may be controlled by the
/var/opt/oracle/oravg.conf file. For the default configuration where the shared
storage is activated by SGeRAC before starting Oracle Cluster Software or RAC instance,
the oravg.conf file should not be present.
Listener
Automated Startup and Shutdown
CRS can be configured to automatically start, monitor, restart, and halt listeners.
If CRS is not configured to start the listener automatically at Oracle Cluster Software
startup, the listener startup can be automated with supported commands, such as
srvctl and lsnrctl, through scripts or SGeRAC packages. If the SGeRAC package
is configured to start the listener, the SGeRAC package would contain the virtual IP
address required by the listener.
Manual Startup and Shutdown
Manual listener startup and shutdown is supported through the following commands:
srvctl and lsnrctl
Network Monitoring
SGeRAC cluster provides network monitoring. For networks that are redundant and
monitored by Serviceguard cluster, Serviceguard cluster provides local failover
capability between local network interfaces (LAN) that is transparent to applications
utilizing User Datagram Protocol (UDP) and Transport Control Protocol (TCP).
For virtual IP addresses (floating or package IP address) in Serviceguard, Serviceguard
also provides remote failover capability of network connection endpoints between
cluster nodes and transparent local failover capability of network connection endpoints
between redundant local network interfaces.
38 Serviceguard Configuration for Oracle 10g RAC